Book/Report FZJ-2018-03716

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png
Adsorbat-Induzierte Oberflächenspannungen



1992
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Jülich : Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag, Berichte des Forschungszentrums Jülich 2572, 77 p. ()

Please use a persistent id in citations:

Report No.: Juel-2572

Abstract: A cantilever bending experiment has bees set up to study adsorbate-induced surface stress on silicon and nickel single crystal samples. The adsorbate-induced bending of the substrate is detected using a very sensitive capacitance method. The resolution of the stress measurements was $\pm$ 20 dyn/cm and $\pm$ 100 dyn/cm, on 0.3 mm thick Si- and Ni-samples, respectively. Oxygen-induced surface stress on Si(111) and Si(100) has been investigated for substrate temperatures ranging from 300 K to 700 K. As a result of the breaking of the Si-Si bonds and the formation of Si-O-Si bonds, both surfaces exhibit a measurable stress. A linear stress vs. coverage dependence is found. The oxygen-induced surface stress on silicon is independent of the adsorption temperature. A monolayer coverage on Si(111) causes a considerable compressive stress of -7000 $\pm$ 980 dyn/cm, wheras the same oxygen coverage on Si(100) induces a small tensile stress of 260 $\pm$ 40 dyn/xm. The experimental results are in decent agreement with a simple cluster calculation using a valence-bond model. Thus, the different stress behavior can be attributed to differences in the local geometric structures of the O-SWi(111) and the O-Si/100) clusters. [...]


Contributing Institute(s):
  1. Publikationen vor 2000 (PRE-2000)
Research Program(s):
  1. 899 - ohne Topic (POF3-899) (POF3-899)

Database coverage:
OpenAccess
Click to display QR Code for this record

The record appears in these collections:
Document types > Reports > Reports
Document types > Books > Books
Workflow collections > Public records
Institute Collections > Retrocat
Publications database
Open Access

 Record created 2018-06-25, last modified 2021-01-29


OpenAccess:
Download fulltext PDF
External link:
Download fulltextFulltext by OpenAccess repository
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)